behind me, tahrir square is filled with challengers of egyptian president mohamed morsi, a scene of shooting earlier today. but the focus tonight, rick, is a few miles away from where we are right now, the presidential palace. anti--morsi protesters out there in big time. they've been trying to knock down a barrier made of rock and steel separating them and the palace, all the while supporters of morsi are gathering not too far away also in big numbers. there was a deadly clash between those two sides just one week ago. the fear is this could happen again. the difference, however, between now and then is that morsi in the interim has endowed the military here with stronger powers. they can intervene, maybe break up some violence. now, all the while this is all focused on that draft constitution which is planned for a vote, a referendum on saturday. the critics of morsi say that he's trying to rush it through. they say it's discriminatory towards segments of the population here, and they also say that his own style over the last couple weeks reminiscent of one other strong man we've seen here